Le Roy, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Le Roy, a city in Decatur County, Iowa.
Overnight
70°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy. Low around 70, with temperatures rising to around 72 overnight. South wind around 8 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Le Roy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Slight Chance Showers And Thunderstorms | 8 mph S | 19% |
| Saturday | 83°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 39% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph NNW | 71% |
| Sunday | 67°F | Chance Rain Showers then Chance Showers And Thunderstorms | 7 to 12 mph NNE | 45% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 12 mph NE | 65% |
| Monday | 60°F | Rain Showers Likely | 12 mph NE | 65% |
| Monday Night | 52°F | Chance Rain Showers | 7 to 10 mph NE | 47% |
| Tuesday | 59°F | Slight Chance Rain Showers then Partly Sunny | 9 mph NE | 20% |
| Tuesday Night | 46°F | Partly Cloudy | 6 mph NE | 4% |
| Wednesday | 62°F | Sunny | 5 mph ENE | 2% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph E | 6% |
| Thursday | 65°F | Slight Chance Rain Showers | 3 mph ESE | 17% |
| Thursday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 2 mph ESE | 17% |
| Friday | 67°F | Slight Chance Rain Showers then Partly Sunny | 2 to 6 mph E | 17% |
Forecast source: National Weather Service (api.weather.gov) for Le Roy (40.878, -93.593). Updated through the day.
Growing snapshot for Le Roy
Last spring frost
Apr 30
First fall frost
Oct 8
Growing season
161 days
Hardiness zone
5b
More local growing data for Le Roy: nearby ZIP 50103 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Leon 6 Ese, Ia (5.2 mi from Le Roy). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.